Will binaries built in 10.6 still run in 10.5?

[Ryan Schmidt]

On Oct 4, 2010, at 14:00, Nikos Chantziaras wrote:

> lipo -info says: "Non-fat file: Foo is architecture: ppc7400"  These are the Qt frameworks (built on my system, with the default compiler Qt uses when you choose "32-bit PPC", which is GCC 4.2.1).
> 
> However, on the libraries build with MacPorts, lipo says ppc instead of ppc7400: "Architectures in the fat file: libvorbis.a are: i386 ppc"


My understanding was that, on Leopard and later, if you request architecture ppc, you'll get ppc7400 instead, and that this is not a problem. Please see:

http://lists.macosforge.org/pipermail/macports-dev/2008-July/005626.html